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Artificial Lighting

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Artificial Lighting

Grow light discussions; HID, florescent, LED, and anything else that isn't the sun itself.

Members: 138
Latest Activity: Nov 13, 2017

Discussion Forum

How high?

Started by Ian Cameron. Last reply by Ian Cameron Dec 29, 2014. 5 Replies

Now that I've migrated from T5's to HID's, I'm wondering how far above the plants these beasts should be. I'm running a 1000w MH dialled back to 75% above my 5x5 raised bed, with lettuce, kale and…Continue

HID's, what are the pros and cons for MH and HPS?

Started by Ian Cameron. Last reply by Ian Cameron Dec 20, 2014. 7 Replies

Hi Folks, well after 2 yrs of T5's, I have switched to HID's for the balance of my winter season in the in-ground green house. I have done some research but cannot find any definitive reasons to go…Continue

HID lighting

Started by Chris Blanco. Last reply by Jeff S Dec 19, 2014. 9 Replies

I have a lighting question, I am getting ready to run electrical in my grow room. The grow area will consist of 2 8' x3' GBs put end to and and 2 8'x3' DWC sitting just below the GBs. The total foot…Continue

HID's raising cain with my timers

Started by Ian Cameron. Last reply by Ian Cameron Sep 27, 2014. 2 Replies

Seems I can get a timer to hang together for more than ten cycles when firing up my MH's. Should I be using a relay of some sort? Any ideas?Continue

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Comment by David Schwinghamer on April 29, 2012 at 9:58am

Ive been reading about the great growth you can get from blue led lighting, can you tell me some products that give bright light output?

Comment by LogicalHydro on September 28, 2011 at 10:34pm

Shawn,

I would say you will get better results from the MH over CFLs, but the price in terms of energy usage is the main drawback from that. The quality will most likely be seen in the amount of hours that the bulbs last. Good vs. bad 400W bulbs for early growth wont show much difference. And for seed starting 400W is way overkill IMO. I start with 1- 22W T5 and that's it for the first 2 weeks

Comment by Shawn Cruze on September 28, 2011 at 10:21pm
For starting seeds and early vegetative growth..... 400W metal halide or 4, 96W compact florescent bulbs? And how much of a factor is the quality of the bulbs? I have access to many metal halide bulbs that were used in an aquarium or should I suck it up and buy expensive Hortilux?
Comment by Burton on March 31, 2011 at 8:00pm

The only comparison video I found in the past showed good results. However plasma is uber expensive for what you get >./p>

 

http://plasmagrowlighting.net/Chameleon_Grow_Systems/Products.html $1200/$2200/$6700 for a 4'x4' area 0_0

 

Just goto youtube and type plasma vs hps you will find several grows

Comment by AJ Grottke on March 31, 2011 at 4:49pm
Tilly do you have a link to this video? Id love to see the results.
Comment by tilly the tilapia on March 30, 2011 at 7:33pm

just watched video on comparison of plasma and hps

wondering why anyone would do a comparison using coleus with hps

coleus does far better under metal halide than hps

coleus flowers are not usually the intent of growing this plant ,the colorfull leaves is what sells the plant .

a better comparison would be to use mh x plasma

Comment by Sylvia Bernstein on March 17, 2011 at 7:20am
Outstanding article, Sahib! I'm putting it up on the homepage for a while.
Comment by Sahib Punjabi on March 17, 2011 at 6:20am

I came across this article yesterday and thought that a few members may enjoy it as I did...

 

http://joongangdaily.joins.com/article/view.asp?aid=2933479

 

God bless

Comment by AJ Grottke on February 22, 2011 at 4:18pm
Great to have your here Tilly and TC :)
Comment by TCLynx on February 21, 2011 at 8:42pm
I must say that since I live in Florida, there is little reason for me to grow much indoors under lights but I'm glad to now have a place to send people when they start asking lighting questions.
 

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